Investigators found physical evidence at the scene that linked 48-year-old Santiago Martinez-Flores to the crime.

Martinez-Flores has a lengthy criminal history that dates back to 1994. He was deported to Mexico in 2001 after serving two years in the Oregon Department of Corrections.

According to investigators, Martinez-Flores might be using the aliases "Felipe Coeto" and "Isidro Ramos Flores."

If you have any information on where he is, call the tip line at 503-723-4949.

Neighbors in the area said they were relieved to know investigators have identified a suspect.

"It's a terrible thing, and to have somebody take advantage of a child like that I think is one of the worst things that a human being can do," Debra Griffith said.

Griffith said she was concerned that if Martinez-Flores was deported again, he'd just come back. She believes prosecutors should keep him in prison.

"I hope they put them away for a long, long time," she said.

Residents of the apartment complex that KATU spoke with didn't recognize the photo.

Heather Williams said she is concerned about other children in the neighborhood.

"The girls go back-and-forth with our friends, back-and-forth across the street, and they're always going back-and-forth unattended all the time," Williams said.

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After the sexual assault, the girl's family spoke with KATU News about what had happened.

Her mother said that the 9-year-old was sound asleep in her room that she shares with her 5-year-old sister when a stranger broke in through a window.

After being pinned down by the stranger, the girl managed to escape and run to her mom's room. When they realized what happened, the girl's dad took his gun and went into the bedroom, but the suspect had already escaped through the window.

Deputies were able to find the suspect's fingerprints, the mom told KATU. The little girl was able to recall what her attacker looked like, and helped deputies create a sketch of what he looked like.